Projector + mirror vs digital screen in short rooms

[JWSIV]

We are moving office spaces from our 20 foot lanes to shorter rooms.
I like the ease of use of the projectors, but wanted some opinions on using a digital screen and minimizing the letters in a short room as opposed to a mirror and projector set up.

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[dantt]

You must use a mirror if you do refraction.

 

[The Doctor]

Would strongly advise against non-mirrored rooms. As you know, optical infinity is 20 feet. If you start refracting at shorter distances, you will always have to fudge a quarter diopter here or there in your mind. It gets even more fun when some rooms are mirrored and some are not. You can still use a digital screen with a mirror as well.